JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#100" class="link">Link 1</a>
<a href="#101" class="link">Link 2</a>

<div id="100" class="clickTarget">Target 1</div>
<div id="101" class="clickTarget">Target 2</div>

CSS

.clickTarget.target {
    color: #4f8dd5;
}
.clickTarget {
    padding: 30px;
    border: 1px solid black;
}

JavaScript

$('a.link').on('click', function() {
   $('.target').removeClass('target');
   var id = $(this).attr('href');
   $(id).addClass('target');
   return false;
});